US Robotics 56K USB MODEM - Instruções de Operação descarregar pdf (Página 125)

GLOSSARY

121

V.22

An ITU-T standard for modem

communications at 1200 bps, compatible with

the Bell 212A standard observed in the U.S.

and Canada.

V.22 bis

An ITU-T standard for modem

communications at 2400 bps. The standard

includes an automatic link negotiation fallback

to 1200 bps and compatibility with Bell

212A/V.22 modems.

V.27 ter

An ITU-T standard for facsimile operations

that specifies modulation at 4800 bps, with

fallback to 2400 bps.

V.29

An ITU-T standard for facsimile operations

that specifies modulation at 9600 bps, with

fallback to 7200 bps.

V.32

An ITU-T standard for modem

communications at 9600 bps and 4800 bps.

V.32 modems fall back to 4800 bps when line

quality is impaired.

V.32 bis

An ITU-T standard that extends the V.32

connection range: 4800, 7200, 9600, 12,000,

and 14,400 bps. V.32 bis modems fall back to

the next lower speed when line quality is

impaired, fall back further as necessary, and

also fall forward (switch back up) when line

conditions improve (see online fall back/fall

forward).

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 136 137

Sem comentários

US Robotics 56K USB MODEM - Instruções de Operação Página 125